stahley



. STANLEY.

MIXiNG VALVFL.

APPUCATION FILED luhv 14. 1911.

Patented Aug. 22, 1916.

4 SHEETS-SHEET I Tia-4 A. M. STANLEY.

MIXlNG VALVE.

APPLICATION FiLED JULY 14, I911.

Patented Aug. 22, 1916.

4 SHEETS-SHEET 2- g magpie c MMm. M: 3513 flttozwuf A. M. STANLEY.

MIXING VALVE.

APPLICATION FILED JULY :4, ISH.

A M. STANLEY.

MIXING VALVE.

APPLICATION FiLED JULY H. mm.

Patented Aug. 22, 1916.

4 SHEETS-SHEET 4.

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' ARTHUR H. STANLEY, OF LYNN, MASSACHUSETTS;ASSIGNOR T HYDROCARBON CON- VERTER COMPANY, 91% NEVI YORK N Y., A CORPORATION OF DELAVARE.

' T oall whom it may concern:

'Be 't-Iknown that I' 'knTnUn M. STANLEY,

a eitizemof-the United States of America, and aresident of Lynn, county of Essex,

5 andLStatje of Massachusetts, haveinvented certain new [and useful Improvements in Mining-Valves, of which the following is a speeific'ation. i

My invention relates to improvements in mixing valves, 11. e.,.val'ves for mixing gases and liquids, and is primarily intended for use in connection with gas making'devices such as are illustrated and described in the application of E. B. Benharn filed October 16, 1909, 'Sr. No. 523,043, (Patent No. 1,000,708, Aug. 15,1911) and such as shown in my application filed August 31, 1910, Sr. No. 579,851;'but the improved valves herein described are also adapted for direct use on gasolene engines and the like, constituting in such cases 'what'are known as generator valves. Such mixing valves, whether used in connection with agasmaking device such as those' referred. to, or used as'generator valves Ion engines,- are usuallybperatedby the, suction of an engine, such suction acting through the gasinaking device when the valve is used in connectiohwith such a device. Heretoforefsuch -valves have usually comprisedasingle valve plug, normally held closed by spring. It has been found that such'a valve, when its spring is adjusted for proper work at from say half load to full load of theengine, is notin proper adjustment when the engine --is"running on very light load, for example, mere friction load; .hnd for this reason the engine may operate firregular'ly on light loads or may not op- -erate at all owing to the suction of the engine.

40 being insutfi'cient o'n light loads-to/open the valve. To obviate this objection the iniprovedmixing valves herein described are provided with a plurality of puppet or plug valves having independent springs or loading means, the spring of one of said valves being adjusted to permit rise of its valve plug-when the engine is working on very light load,- and, therefore, when the suction of the engine is very low, the spring of another of the valve plugs being arranged to permit-that plug to open only when the load on the engine isniuch greater, and, therefore, the suction 0n the engine is much stronger; and these two valve plugs supply oil to the draft current passing through the removed.

MIXING-VALVE,

Specification of letters Patent. Pgitentefi A uo 22 s plicagonjld July 14, 1911. Serial No. 638,50

valve at different rates; the valve plug which opens on very light loads supplying oil at a. relatively-low rate, while. that which opens on heavier loads supplies Oll at a higher rate. As shown in the accompanying drawings,

in some cases the two valve plugs are ar-;

ranged concentrically, while in other cases they are arranged side by-si cle.

My invention comprises, in a mixing valve, a plurality of valve plugs, one arranged to open -on light loads, another -ar-- ranged to open only on heavier loads, and comprises also various features of structure and arrangement hereinafter described and particularly pointed out in the accompanymg claims.

The objects of my nvention are to improve the construction of mixing valves such as referred to; to provide a mixing valve which will open on, and'he -in proper adjustment for, very light loads, and yet Willi.

be in proper adjustment for operating on heavy loads, and will properly control the supply of fuel at both light and heavy loads; and to make such valvesimple, eoi'npa'ct,

ation. I p

I will now proceed to describe my invention with reference to the: accompanying drawings in which two forms of valve erneasy to adjust, and automatic in its operbodying the invention are illustrated, antiwwill then point out the novel features in claims.

In said drawings: Figure- 1 shows a central vertical section of one form of my miX ing valve above described, the form shown being that in which the two valve plugs are arranged concentrically, and Fig. 2 shows a transverse section of said valve, the section being taken on the line 'v."u of Fig. 1. 3 shows a front elevation and partial section of the valve, looking from. the right of Figs.

1 and 2, the air inlet pipe and air-control valve and the stems of the two valve. plugs being sectioned vertically. Fig, 4: shows a top view of the main portionot the valve,

the bonnet having been removed. Fig. 5

shows a top view of the inner valve plug; and Fig. 6 shows a top view of the outer valve plug, the inner valve plug having been Figs. 7-11 inclusive illustratean alternative form of mixing valve wherein two valve plugs aire'placed side by side, Fig. 7 showinga central vertical section of the valve Fi 8 a to view thereof Fig. 9 a a a P 1 .v

horizontal section on the irregular line ww of Fig. 7, Fig. 10 showing a vertical section on the line w-av of Fig. 7, and Fig. 11 showing a vertical section on the line y 1 of Fig. 7.

Referring first to Figs. 1 to 6 inclusive, numeral 1 designates the valve body, having a seat 2 for the outer valve plug 3 and having a fuel supply duct 4 provided with an inlet connection 5 and with ports 6 leading to the seat for valve plug 3. The casing 1 furthermore has abonnet 7. Needle valves 8 regulate the flow of fuel through ports 6. The valve casing l furthermore has an air or gas connection 9 in which I customarily provide air ports 10 and 11, controlled by a rotary or turn-plug valve 12; the two ports 10 and 11 beingprovided, with a valve controlling them, because in some cases it is desired to supply hot air to the mixing valve and in other cases to supply cold air to the mixing valve, and in still other cases to supply both hot air and cold air, in suitable- 13 designates a pipe for sup-- proportions. plying hot air to port 10. As shown particularly in Fig. 3, the structure of turnplug valve 12 is such that either port 10 or port 11 may be opened and the other closed, or both ports may be open at the same time, and to such degree as may be desired. 14 designates a handle by which valve plug 12 may be rotated.

The base of valve 3 is hollow, as shown particularly in Figs. 1-6, and is provided with side ports 15 permitting entrance of air to the space directly beneath the inner valve plug 16. To the base of the valve plug 3 is connected a hollow stem 17 passing through a hollow boss 18 at the bottom of valve casing 1; and as shown particularly in Fig. 3 a pivoted lever 19 engages the hollow stem 17 and has connected to it a spring 20 provided with screw means 21 for adjusting its tension. This spring 20, it will be seen, tends to hold valve plug 3 seated. In this valve plug 3 there is a port 22 registering with one of the three ports (5 of the valve seat ('see Fig. 2). The inner valve plug 16 is provided with a stem 23, located within the hollow stem 17 of valve plug 3, and a pivoted lever 24 (Fig. 3) engages this stem 23 working freely in an orifice 24", Fig. 3) in the hollow valve stem 17; and to lever 24 is connected a spring 25 having screw means 26 for adjusting its tension. The tensions of the two springs 20 and 25 are so adjusted that the tension of spring 25' is relatively light while that of spring 20 is relatively heavy. It will be seen, therefore, that when the engine or other suction-producing device to which this valve is connected is operating, and when the suction produced by that engine or device is relatively light, only valve plug 16 will be lifted from its seat, such seat being the inner surface of valve plug 3, and

therefore only port 22 and the particular port 6 to' which that port 22 communicates will be opened; while when the suction is heavier, and sufficiently heavier to overcome the tension of sprin 20, both valve plugs will be lifted and al? of the ports 6 will be opened. This permits free supply of fuel to the engine whether that engine be working on very light load or be working on full load. Since each of the ports 6 has a separate regulating valve 8, the opening of that port 6 which communicates ,with port 22 may be regulated so as to supply a proper amount of fuel when the engine is working on very light loads, and the opening of the other ports 6 may be adjusted by other corresponding valves 8 to supply the proper amount of fuel to the engine when it is working on full load.

, Referring now to Figs. 7-11 inclusive. In the valve shown in these figures the two valve plugs are arranged side by side, instead of concentrically as in the structure already described. 27 designates the valve body, having a seat 28 for one of the valve plugs, 29, and having a seat 30 for the other valve plug 31. fuel supply duct 32. having an inlet connection 33, is provided for valve plug 29, and a similar but separate fuel supply duct 34 having an inlet connection 35, is provided for valve plug 31. The flow of oil to these supply ducts is controlled by independent needle valves, 36 and 37, each arranged. as hereinafter described, to seat slightly, in advance of the seating of its corres xmding main valve plug, 29 or 31. These nccdle valves are provided, because in the case of a large plug valve, such as 29 and 3l. it is not desirable to have the complete shut ting oll'of the fuel effected by such a large valve, since suclwvalves do not always scat perfectly. The supply ducts 32 and 34mm:- inunicatc with their respective valve seats through suitable ports 38 (Fig. 9) and suitable nccdlc valves 39 adapted to be adjusted by hand regulate the flow through these ports. The valve casing 27 is further provided with an air or gas connection 9 similar to that of the valve illustrated in Figs. 1-(3 inclusive, which air or gas connection is customarily provided with air ports 10 and 11 controlled by a rotary turn-plug valve 12; and 13 designates, as in Fig. 1 a pipe for supplying hot air to port 10. The valve casing 27 is provided with a bonnet 40 in suitable bearings of which are mounted the stems 41 and 42 of valve plugs 29 and 31 rcspectivel y. Upon the top of the valve bonnet 40 are provided rock shafts, 43 and 44, for valves 29 and 31 respectively, said rock shafts mounted for oscillation upon the arbor 45 carried by the bonnet. Each rock shaft, 43 or 44, is provided with a lever extension 46 engaging the corresponding valve stem, 41 or 42. Each such rock shaft is further provided with another lever extension, 47, to which is connected a spring, 48 or 49, provided with screw means '50 (Fig. 10) for adjusting its tension. These springs tend, as will be seen, to hold closed their respective valve plugs 29 or 31. Each rock shaft, 43 or 44, is further provided with another lever extension 51, for the control of the corresponding needle valve 36 or 37. As shown particuhirly in Fig. 11, each of these needle valves, 36 and 37, is provided with a guide piston 52, working in a guide cylinder 53 and provided at its uper end with a valve stem 54 which passes freely through an orifice in an arm 55, pivoted to a bracket 56. Above the lever 55. each needle valve stem 54 is provided with a. fixed collar 57, and between said collar and the upper portion of the bracket 56a light spring 58 is provided. The construction is such, as will be seen. that when the corresponding main valve plug (31 in Fig. 11) opens, the lever 51 raises the lever so opening the corresponding needle valve (37 in Fig. 11). Since the needle valve is to seat slightly before the main valve plug, as previously stated, when both valves are seated as shown in Fig. 11 there is slight clearance between lever and collar 57, -so that the main valve plug opens slightly before the needle valve )egins to open; and correspondingly the needle valve seats slightly before-the main 'alve seats. This insures independent seating of the needle valve and main valve, and insures complete shutting off of the oil supply even though the main valve should not seat perfectly.

The valve illustrated in Figs. 7-11 inclusive operates in substantially the same manner as the valve shown in Figs. 1-6 inclusive. That is to say, the spring (48 or 49) of one of the two main valves, (29 and 31) is eus tomarily adjusted to a much lighter tension than is the, other spring. and, therefore, one of these main valves, 29 and 31, will open when the engine is running under very light load, and both will open when the engine is running under heavier load.

\Vhile in the valves shown in the drawings I have provided only two valve plugs, with independent springs adjusted to different tension, it will be obvious that the numher of valve plugs and springs therefor may be increased without invention, the springs of the several valve plugs being adjusted to different tensions; and thereby an extremely accurate and automatic adjustment of the supply of fuel for different loads may obtained.

What I claim is 1. A mixing valve comprising in combination a valve casing having a valve seat, a main valve to seat on such valve seat and arranged to be opened by suction, means for supplying liquid to a gas current passing such valve. another valve controlling the supply of such liquid to such supply means. and operating means for such second valv'e arranged to close such second valve before the main valve closes, and to open such second valve after the main valve opens.

2. A mixing valve comprising in combination a valve casing having a valve seat in which is a port. a main valve arranged to seat on such valve seat and to be opened by suction,nneans for supplying liquid to the port of such valve seat. a. second valve controlling the fiow of liquid through such sup ply means, and operative means for said second valve, arranged to open such second valve after the opening of said main valve, and to close said second valve before the closing of said main valve.

3. A mixing valve comprising in combination a valve chamber having a valve seat, a main valve arranged to seat on such valve seat and having a stem, means for supplying liquid to a draft current passing such valve, a second valve controlling the flow of liquid through such supply means, such second valve having a stem, a lever cngag ing the stem of the main valve, spring means tending to hold said main valve closed, a second lever engaging the stem of said second valve and arranged to be engaged by the lever of said valve when the. main valve opens, and spring means tending to close such second valve.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ARTHUR M. STANLEY.

\Vitnesses H. M. MARBLE, D. A. DAVIES. 

